Home / 508,464,007.20-762,696,010.80-393,672,751.20

Finding the Fourth Proportional to 508,464,007.20, 762,696,010.80 and 393,672,751.20

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Solution

The fourth proportional to 508,464,007.20, 762,696,010.80 and 393,672,751.20 is: 590,509,126.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,464,007.20 : 762,696,010.80 = 393,672,751.20 : x
  2. Step 2: Convert to fraction form
    508,464,007.20/762,696,010.80 = 393,672,751.20/x
  3. Step 3: Cross multiply
    508,464,007.20x = 762,696,010.80 × 393,672,751.20
  4. Step 4: Simplify right side
    508,464,007.20x = 300,252,636,900,900,864
  5. Step 5: Solve for x
    x = 300,252,636,900,900,864/508,464,007.20
  6. Step 6: Final answer
    x = 590,509,126.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.